When pathogens get past those preliminary defenses, your body mounts an immune response. Your innate immune system responds first and employs several types of cells and molecules to fight off pathogens, each with their own jobs.

Contact tracing is the process of working with an infected patient to help them recall everyone with whom they have had close contact, then, warning the exposed individuals of their potential exposure.

Did you know that every two seconds someone in the U.S. needs blood? But, only 3% of age-eligible people donate blood annually. Donating blood is essential to community health and the need for blood is constant. One donation can potentially save up to three lives.